<script>
import { reactive,computed,ref } from "vue";
import { useStore } from "vuex";
import { findBrand } from "@/api/home";
import XtxSkeleton from "./library/xtx-skeleton.vue";
export default {
    name: 'HomeCategory',
    setup(){
        const brand = reactive({
            id: 'brand',
            name: '品牌',
            children: [
                {
                    id: 'brand-children',
                    name: '品牌推荐'
                }
            ],
            brands: []
        })
        const store = useStore()
        const menuList = computed(()=>{
            const list = store.state.category.list.map(item=>{
                return {
                    id: item.id,
                    name: item.name,
                    children: item.children && item.children.slice(0,2),
                    goods: item.goods
                }
            })
            list.push(brand)
            return list
        })

        const categoryId = ref(null)
        const currentCategory = computed(()=>{
            return menuList.value.find(item=>item.id===categoryId.value)
        })

        findBrand().then(data=>{
            brand.brands = data.result
        })
        return {menuList,categoryId,currentCategory}
    },
    components: {
      XtxSkeleton
    }
}
</script>

<template>
    <div class='home-category' @mouseleave="categoryId=null">
        <ul class="menu">
            <li v-for="item in menuList" :key="item.id" @mouseenter="categoryId = item.id" :class="{active:categoryId===item.id}">
                <template v-if="item.children">
                    <RouterLink
                        v-for="sub in item.children"
                        :key="sub.id"
                        :to="`/category/sub/${sub.id}`">
                        {{ sub.name }}
                    </RouterLink>
                </template>
                <span v-else>
                  <XtxSkeleton width="60px" height="18px" style="margin-right: 5px;" bg="rgba(255,255,255,0.2)" />
                  <XtxSkeleton width="60px" height="18px" bg="rgba(255,255,255,0.2)" />
                </span>
            </li>
        </ul>
        <div class="layer">
          <h4 v-if="currentCategory">{{ currentCategory.id ==='brand'?'品牌':'分类' }}推荐<small>根据您的购买或浏览记录推荐</small></h4>
          <ul v-if="currentCategory && currentCategory.goods && currentCategory.goods.length">
            <li v-for="good in currentCategory.goods" :key="good.id">
              <RouterLink to="/">
                <img :src="good.picture" alt="">
                <div class="info">
                  <p class="name ellipsis-2">{{ good.name }}</p>
                  <p class="desc ellipsis">{{ good.desc }}</p>
                  <p class="price"><i>¥</i>{{ good.price }}</p>
                </div>
              </RouterLink>
            </li>
          </ul>
          <ul v-if="currentCategory && currentCategory.brands && currentCategory.brands.length">
            <li class="brand" v-for="brand in currentCategory.brands" :key="brand.id">
                <RouterLink to="/">
                <img :src="brand.picture" alt="">
                <div class="info">
                    <p class="place"><i class="iconfont icon-dingwei"></i>{{brand.place}}</p>
                    <p class="name ellipsis">{{ brand.name }}</p>
                    <p class="desc ellipsis-2">{{brand.desc}}</p>
                </div>
                </RouterLink>
            </li>
        </ul>
        </div>
    </div>
</template>

<style scoped lang="less">
@import '@/assets/styles/variables.less';
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0,0,0,0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;
      &:hover,&.active {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }

  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255,255,255,0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #e3f9f4;
          }
          img {
              width: 95px;
              height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
		    width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
    }
    li.brand {
        height: 180px;
        a {
            align-items: flex-start;
            img {
            width: 120px;
            height: 160px;
            }
            .info {
            p {
                margin-top: 8px;
            }
            .place {
                color: #999;
            }
            }
        }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }

  .xtx-skeleton {
    animation: fade 1s linear infinite alternate;
  }
  @keyframes fade {
    from {
      opacity: 0.2;
    }
    to {
      opacity: 1;
    }
  }

}
</style>